Who was the fifth guru in Sikhism?

Guru Arjan Dev

The correct answer is Option (3) - Guru Arjan Dev

Guru Arjan Dev was the fifth Sikh Guru and played a significant role in shaping Sikhism. He compiled the Adi Granth, the central religious scripture of Sikhism, and completed the construction of the Harmandir Sahib, also known as the Golden Temple, in Amritsar. Guru Arjan Dev promoted the teachings of Sikhism, emphasizing humility, service, and devotion to God. He also faced persecution and martyrdom for his beliefs, becoming a symbol of Sikh resilience and commitment to justice.